Watson's theorem and the N ∆ (1232 ) axial transition
Abstract
We present a new determination of the N ∆ axial form factors from neutrino induced pion production data. For this purpose, the model of Hernandez et al. [Phys. Rev. D 76, 033005 (2007)] is improved by partially restoring unitarity. This is accomplished by imposing Watson's theorem on the dominant vector and axial multipoles. As a consequence, a larger C_{5}^{A}(0 ), in good agreement with the prediction from the offdiagonal GoldbergerTreiman relation, is now obtained.
 Publication:

Physical Review D
 Pub Date:
 January 2016
 DOI:
 10.1103/PhysRevD.93.014016
 arXiv:
 arXiv:1510.06266
 Bibcode:
 2016PhRvD..93a4016A
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Experiment;
 Nuclear Experiment;
 Nuclear Theory
 EPrint:
 17 latex pages, 7 figures, 2 tables. Some typos corrected